<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <!-- 头像 -->
        <img src="../assets/ron.png" alt />
      </div>
      <!-- 登录框 -->
      <!-- form绑定统一的数据对象和验证规则对象 -->
      <el-form
        ref="loginFormRef"
        label-width="0px"
        class="login_form"
        :model="loginForm"
        :rules="loginFormRules"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            prefix-icon="iconfont icon-user"
            v-model="loginForm.username"
            placeholder="请输入用户名"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-3702mima"
            v-model="loginForm.password"
            show-password
            placeholder="请输入密码"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登陆</el-button>
          <el-button type="info" @click="reset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 表单数据绑定
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证对象
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }

        ]
      }
    }
  },
  created () {},
  methods: {
    // 重置表单的方法
    reset () {
      this.$refs.loginFormRef.resetFields()
    },
    // 提交登陆 做一下验证方法
    login () {
      this.$refs.loginFormRef.validate(async (isValidate) => {
        // 如果验证通过 则发送ajax请求
        if (!isValidate) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status === 200) {
          // 登陆成功或失败提示用户
          this.$message({
            message: '登陆成功',
            type: 'success',
            showClose: true
          })
          // 保存token到session storage中 并通过编程式导航跳转到home页面
          window.sessionStorage.setItem('token', res.data.token)
          this.$router.push('/home')
        } else {
          this.$message({
            message: '登录失败',
            type: 'error',
            showClose: true
          })
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b5b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
